<!doctype html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport"
        content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
  <script src="js/jquery.min.js"></script>
</head>
<body>
<div>
  <h1> 登录 </h1>
  用户：<input id="name" name="name"><br>
  密码：<input id="password" name="password"><br>
  <input type="button" onclick="onsub()" value=" 提 交 ">
</div>
<script>
  function onsub(){
    // 请求后端的接口使用 ajax
    jQuery.ajax({
      url:"login2",
      type:"POST",
      data:{"name":jQuery("#name").val(),"password":jQuery("#password").val()},
      success:function(result){
        alert(result);
        console.dir(result);
      }
    });
  }
</script>
</body>
</html>